Morgan Mitchell (born 3 October 1994) is an Australian athlete who specialized in the 400 metres and now competes in the 800 metres.^[2]

Mitchell started athletics in 2000, inspired by the success of compatriot Cathy Freeman at the Sydney Olympics, but stopped at the age of 12 to concentrate on netball. She represented Australia on junior level before returning to athletics in 2012.^[3]

Mitchell's father is an African American former professional basketball player who moved from the United States to Australia, and her mother is Australian.^[4][5]

Mitchell competed in the 4 × 400 metres relay event at the 2015 World Championships in Beijing without advancing to the final. She represented Australia in the Women's 400m and Women's 4 × 400 m Relay at the 2016 Summer Olympics.^[6] Her personal best in the 400 metres is 51.25 seconds set in Birmingham in 2016.

In 2019, Mitchell switched focus to the 800 metres, rapidly improving to her current personal best of 2:00.06.^[7]

As part of her switch in event, Elizabeth Mathews became her coach and Mitchell began running 60–70 km a week rather than the 15 km per week she had done for sprinting previously.^[8]

Mitchell competed in the 2020 Tokyo Olympic Games. She came sixth in her Women's 800m heat with a time of 2:05.44 and was therefore eliminated.^[9]